Adding-machine.



D. B. BENTON.

ADDING MACHINE. APPLIGATION FILBD.SBPT.14. 19'08.

PateIit-zed Mar. -30, 1909.

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DANIEL CB. BENTN, OF GLYDE, GEORGIA..

lAIDDING-MACLEIINI] To' all whom it may concern:

Be it known that I, DANIEL B. BENTON,a

-citizen of the United States, residingM at .construction,

Clyde, in the county of Bryan and'State .of Georgia, have invented certain new and use,- ful Improvements in Adding-Machines and I do hereby declare the following to be a lfull, clear, and exact vdescription of the'in- .vent1on, such as will enable others skilled in the art to which it' appertains to make and use the same, referencevbeing had to the ac companying drawings, and to the letters and figures of reference marked thereon, which form apart olf this specification.

This invention relates to new and useful improvements in adding machines and the object in view is to produce a simple and efficient device of this nature s o arranged that numerals of any denomin'ationsfmay be quickly added.V l l The invention comprises various details of combinations and arrangefments of parts which will be hereinafter fully described and then specifically defined in the appended claim.

I illustrate my `invention in the accompanying drawings, in which": 4

Figure l is a plan view of the apparatus showingv the various pointers indicating zero. Fig. 2 is a similar view showing the parts in their relative positions and indieating the` first YnumeralV or numerals to be added. Fig. 3 is la similar, viewvshowing the second numeral or series of numerals to be added to the tiret/numeral or numerals indicated at they en'd Iof the point'erin Fig. 2. Fig. 4.- is a simi r view showing the relative positions of the parts and indicating a third numeral or series of numerals to be added to the other two. Fig. 5 is a similar view showing the relative position of the'y parts indicating an additional numeral or numerals to be added to4 the others indicated in views l to 4 inclusive, and Fig. 6 is a cross sectional view through the adding device. Fig. `7 shows the relative position of the va,- rious gears in a .horizontal plane with the casing removed.

Reference' now the drawings by letter, A designates a cas i' ing to which the dial-B is iXed and held stationary, said dial being divided oft by radial Alines into a number of sub-dlvislons.

v In the d awings,. I have shown a hundred of these yines spaced apart and numbered from zere 5. 10 to 100.

Specification of Letters Patent.

being `had to the details of K Patented March 3o, 1'909.

Application led September 14, 1908. Serial No. 462,897.

D designates a graduated ring which rotates about vthe dial B and is rotated'by a knob D3 and, as noted in the cross sectional` view of the drawings, the inner marginal edge of the dial B is beveledp as at B and projects over a similar beveled edge D" formed along theinner marginal edge of the opening of the ring D, said overlappindr beveled edges serving to retainY the ring D in place and still allow thefsamev` to turn freely upon said beveled edge and about the dial B. A ring It is fastened to tne dial B and has a central opening R, said rings being adapted to tnrntogether with a portion of the ring R positioned behind the dial Bl Said ring D is sub-divided in a similar manmounted upon a shaft H', and a pinion H2- is fixed to rotatewi'th the wheel'H and is in meshwith a vgear wheel I mounted upon the shaft I and to said gear'wheel I is ix'ed a pinion I2 which has fastened thereto an indicating pointer I3 adapted to register over4 a dial bearing numerals from zero to 10 as shown. 'A gear wheel K, similar to the other gear wheels referred to, is mounted upon a shaft K and has a pinion K2 fixed to .move therewith which meshes with a gear wheel' L. mounted upon a shaft L', and L2 is a pinion 'wheelfiXed to rotate with the gear wheel L and has an indicatingpointer L3 which is also adapted to indicate adjacent to the face of the. dial sub-divided in the manner clearly described'of the dial over which the pointer- I3V indicates. A third indicating pointer designated by letterf O is mounted upon a pinion O and is operated by the intermeshing gears, in' the manner shown. so that each time the indicating pointer L makes one revolution the indicating pointer O will be moved one point or one'- tenth of the distance of its complete revolution thereo The operation of my adding apparatus is as ollowszAssuming that it is desired to add, for instance, the numerals 30, 25, 40 and l5, all ot the indicating pointers are nlaced to re' isterzeio in Athe manner shown in lug, 1. ,oi the drawings with the indicator and the fixed indicator upon the shown inFig. i2 oi the drawings in which the pointer I1" will register opposite 30 -iipon the dial B. The lgraduated ring is` then rotated siiicie'ntly to bring the numerals 25 of posite the end of the pointer l" and then -t ie pointer is moved to come into alinenient ,with the lixed pointer upon the graduated rin 'and will indicate bpposite 55 upon the 'da B, being the sum of the two numerals 30 and 85 added together.` The ring Vis then moved in order to bring 40, the third nu meral to be added, so that it Will come opposite the' dial B and the pointer thence turned to' indicate in alineine'nt with the i'iXed pointer of the -rotatable ring and in which position the pointer 'F W-ill indicate 95 upon -the dial'B and, When the last numerals l5' are brought opposite the pointer F and the ointer brought into alineinent with the i.xedpointer upon the ring, the dial B will have made a complete revolution andllO Will register opposite the pointer upon the dial B, making the total amount liO. As the dial B makes a complete revolution, the

vpinion xed to its inner end will have iinparted an intermittent movement of one space to the pointer I3 through the medium of the intermeshing gear Wheels. Each time the pointer F makes a revolution, an

additional intermittent movement is ini* partedto the pointer l? and, at ten ievelutions' ot the pointer F, the pointer I3 Wili have made one revolution or indicating 1000. Each time the pointer `I3 makes a revolution, an intermittent movement of one space is imparted tothe indicating pointer L3 which makes a eomplete'revolution every ten revo -liitions of the pointer i3 and so on indicating from 1000, 10,000, 100,000 and so on.

While l have shown an adding device subdivided each dial into one hundred spaces,

it will be understood that the sub-divisions maybe larger, '1000 if desired without departing from the spirit of the invention.

From the foregoing, it will be noted that,

by the provision of an adding machine as shown and described, a simpie and eicient device is. aii'orded wher-eb)7 numerals of any size may be quickly and mechanically added,

the total sum being indicated upon the Various indicating dials.

lWhat I claim to be new is An addingdevie, comprising a casing' having a circumferential Wall with tlangedv edges, an apertured disk fastened to one of said flanges, a dial. `fixed to said disk and provided with an inwardly inclined beveled edge, a movable graduated ring having its kinner marginal edo'e beveled and engaging the beveled edge ot said dial, the outer edge of said ring projecting beyond the circuinference of the casing, shafts supported in suitable bearings in the rear Wall of said casing and said dial, internieshing' gear -ivheels for operating said shafts, and indiA eating' pointers upon the latter, as shown and described.

In Witness whereof hereunto a'flix inv signature in the presence of two witnesses.

DANIEL B. BENT@ i Witnesses J. E. VARREN, E. BENTON. 

